We can often see our faults more clearly in other people, yet we usually fail to apply them to ourselves. Because our reaction is so often to criticize negatively, we usually do not see that we are guilty of the same things. If we find a certain type of behavior especially irritating in others, we may have the same problem!
To illustrate this blindness to our own sins, recall David's sin, recorded for all the world to see in II Samuel 12:1-5, when God sent Nathan to show David his sin with Bathsheba. Nathan told of a case in which a rich man who owned many sheep had stolen a poor man's pet lamb and killed it to eat for dinner. King David was outraged that anyone would be so greedy and selfish, so he pronounced the death penalty on this man. Then Nathan quietly pointed out that David had done the exact same thing when he stole Uriah's wife and sent Uriah to his death.
David was a man who, when he recognized his sin, would deeply repent. So how far his heart fell at that time, we can only imagine. He must have been devastated.
What angers us about others in God's church? Consider this carefully, since in the answer may be a clue to our secret sins. "For you who judge practice the same things."